Outgassing

TECHNICAL DEFINITION

Outgassing refers to the spontaneous release of adsorbed, absorbed, or trapped gases from a material, particularly in low-pressure environments like space, impacting spacecraft integrity and instrument performance.

BACKGROUND

This glossary of aerospace engineering terms pertains specifically to aerospace engineering, its sub-disciplines, and related fields including aviation and aeronautics. For a broad overview of engineering, see glossary of engineering.

SYNONYMS & ALIASES

• Degassing
• off-gassing
• volatile release
• sublimation

USAGE NOTE

Engineers must select materials with low outgassing rates for spacecraft to prevent contamination of sensitive instruments.

DEVELOPERS

Organizations developing technology related to Outgassing.

• European Space Agency (ESA)

  ESA conducts extensive research and develops standards for materials used in spacecraft, focusing on outgassing properties to prevent contamination of sensitive instruments and optical surfaces in vacuum environments.

• NASA (National Aeronautics and Space Administration)

  NASA sets stringent requirements for material outgassing for all its space missions and develops testing methodologies and databases (e.g., GSFC Outgassing Data) to ensure spacecraft integrity and performance.

• Airbus Defence and Space

  As a major manufacturer of spacecraft and satellite systems, Airbus Defence and Space rigorously selects and tests materials for their low outgassing characteristics to protect payloads and ensure long-term mission success.

• Boeing Defense, Space & Security

  Boeing designs and builds various space vehicles and satellites, applying advanced material science and testing protocols to manage outgassing effects on spacecraft components and sensitive instruments.

• Lockheed Martin Space

  Lockheed Martin is a global security and aerospace company involved in the development of satellites, interplanetary spacecraft, and other space systems, with a strong focus on material compatibility and outgassing control.

• Northrop Grumman

  Northrop Grumman is a leading aerospace and defense technology company, engaged in the design and manufacturing of space systems, where mitigating outgassing is critical for mission reliability and performance.

• Ball Aerospace & Technologies Corp.

  Ball Aerospace specializes in spacecraft, instruments, and sensors for various missions, placing a high emphasis on using materials with minimal outgassing to prevent contamination of sensitive optical and electronic components.

• Thales Alenia Space

  A joint venture between Thales and Leonardo, Thales Alenia Space is a key player in European satellite and orbital infrastructure development, meticulously managing material selection and outgassing for space-grade applications.